Construction oe gas-bukneks



H. K. SYNIMES.

Gas Burner.

Patented oct. 4, 1859.

B. d w,

(2?. www@ UNITED sTATEs PATENT ermee.

H. K. SYMMES, OF NIMVTON, MASSACHUSETTS.

CONSTRUCTION OF GAS-BURNERS.

Specification of Letters Patent No. 25,686, dated October 4, 1859.

To all whom it may concern:

Be it known that I, H. K. SYMuEs, of Newton, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Gas-Burners; and I do hereby declare that the following is a full, clear, and exact description of t-heA same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l, is a central vertical sectional view of a burner with my improvement. Fig. 2, is a top view of the same.

Similar letters of lreference indicate corresponding parts in both figures.

The principal object of my invention is to enable the gas to be shut off from all the burners of a city, town, village or district, by means of a valve or cock at the gas works, without materially interfering with the lights in dwellings and other places where it is not desired to interfere with them, thereby in large cities, towns or districts dispensing with the services of many persons.

The invention is also applicable inl other cases to any burners from which it is desired to shut of the gas by a cock or valve in the main or service pipe by which they are supplied, without materially interfering with the lights of other burners supplied by the same pipe.

My said invention consists in certain means of combining the tip with the base of the burner, whereby, while the gas in the main or service pipe is allowed to remain at or below a certain pressure, after the burner has been lighted, it will be permitted free egress from the tip, but on its having its pressure momentarily increased and then reduced will be shut off by an automatic action of the burner and will remain shut off whatever may be the pressure of gas in the main or service pipe.

To enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation.

A, is the base of the burner which screws on to the pipe or branch P, which supplies the gas, and B, is the tip. The base has permanently attached to it two basins C, and C', arranged one within the other and each containing quicksilver represented in red color, the inner one surrounding the central opening of the base; and from the central opening a small open tube c, extends upward above the surface of the quicksilver to or above the level of the top of the basin. rlhe two basins may have substituted for them a single basin of the same size as the larger one. The tip B, is attached to an inverted cup D, which dips into the quicksilver in the outer basin C, and to the crown of which is attached a pipe c, with an open bottom which passes loosely over the exterior of the tube a, and is arranged to dip into the quicksilver in the inner basin C. This tube c, which does not extend so low as the bottom of the cup has not a direct through communication with the tip B, but is closed at (Z, abo-ve which there is provided in the side of the said tube within the cup D, a small hole e. The only communication from the base to the tip of the burner is through the tube a., between the tubes c, and c, between the bottom of c, and the surface of the quicksilver in the inner basin C, and through the cup D, and the hole, e, as indicated by arrows in Fig. l.

E, E, are upright guide rods attached to the cup D, and working through guides 7*', f, secured to the outside of the base A, for the purpose of keeping the cup and tip upright and preventing the cup turning. These rods E, E, may be furnished with nuts or collars at their bottoms to prevent the gas ever raising the cup D, entirely out of the quicksilver and so permitting an escape.

g, is a rigid arm standing out from one side of the cup. at or near the top thereof and having a pawl-like rod 7i, attached to it in such a manner that when its lower end is left free it hangs vertically in a position to clear the guides, f, f as shown in dotted outline in Fig` l, and to permit the cup to descend; but the said rod is capable of being brought to rest with its lower end on one of the upper guides f, f, as shown in bold outline in Fig. l, and also in Fig. 2, and so made to support the cup in a position to keep the lower edges of its tube c, above the surface of the quicksilver in the basin C.

E, is a ring shaped weight which is placed over the tip B, and rests upon the top of the cup, said weight being sufficient to make the cup descend far enough into the quicksilver for the edges of the tube c, to dip into the quicksilver while the gas is not above the highest pressure at which it is desired to burn the gas. Two or more of these weights be provided, one 0r more being used according as it may be desired to burn at a greater or less maximum pressure.

When the burner is to be lighted the cylinder D, is lifted up by hand high enough to permit the rod it, to be placed upon the top of the nearest guide f, and the said rod i is so placed. The gas then passes from the pipe P, to the tip as indicated by the arrows, and the light may be applied. The burner continues in operation so long as the pressure of the gas acting on the whole head of the cup is not suflicient to raise the cup, but when it is desired to put out the light the pressure of the gas is momentarily increased by opening wider the regulating cock or valve at the works or by any other cock provided in the main or service pipe, to such a degree as to overcome the weight of the cup D, and its attachments and the weight or weights F, for the purpose of raising the rod 7L, from the guide j, upon which it has been resting, and permitting the said rod to drop to the perpendicular position shown in dotted outline and is then reduced to what it was before the cup was raised or suiiiciently to permit the descent of the cup so far that the tube c, dips into the quicksilver and so shuts off the gas from the burner. This being done the pressure of the gas might be increased far above any working pressure without raising the cup to admit the gas to the burner tip, as it can only act on the head of the tube 0, which is of Small area compared with the area of the head of the cup. In -this way the ygas may be shut o from street burners without di= minishing the lights in dwelling houses and other places where ordinary burners are used.

Instead of quicksilver some other liquid may be used in the basins C, C', or some packing that will work with a suiliciently slight friction might be used between the cup D, and sides of the basin C, in combination with a suitable valve between the ends of the tubes a, and c, or it may be made with some ieXible material connecting the cup with the base, and with such a valve as I have just mentioned.

What I claim as my invention and desire to secure by Letters Patent is- The combination with the 'inverted cup D, and tube c, and the quicksilver basin or basins or their equivalents forming a movable connection between the base and tip of the burner operating as described, of the pawl like rod or its equivalent attached to vthe cup and a rest for the said rod attached to the base of the burner, the whole operating as described to shut olf the gas from the tip by the temporary increase and subsequent reduction of the pressure in the pipes.

H. K. SYMMES.

Witnesses E. WOODWARD, F. W. BACON. 

